Backpack



FIG. 1 is a front elevational view of a backpack, showing my new design;

FIG. 2 is a back elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a right side elevational view thereof, the left side being amirror image;

FIG. 6 is a perspective view of the backpack, when closed; and,

FIG. 7 is a corresponding perspective view of the backpack, when open.

The ornamental design for a backpack, as shown and described.